"Russian prisoners' lexicon is colourful and full of historical references. Soon, Maria Alyokhina and Nadezhda Tolokonnikova, the two members of the rock band Pussy Riot who are still imprisoned, will discover the inside of a 'Stolypin wagon', a special windowless railway carriage, divided internally into a series of iron-barred cells. These carriages, named after the Tsarist prime minister who introduced them in 1906, have been used for over a century to transport prisoners to penal colonies, many in the remote geographical margins"(aqui)